2008 YAMAHA XCITY 125 check engine light

TABLE OF CONTENTSSAFETY INFORMATION ..................1-1
Further safe-riding points ................1-4
DESCRIPTION ..................................2-1
Left view ..........................................2-1
Right view ........................................2-2
Controls and instruments.................2-3
INSTRUMENT AND CONTROL
FUNCTIONS.......................................3-1
Immobilizer system .........................3-1
Main switch/steering lock ................3-2
Indicator and warning lights ............3-3
Speedometer ..................................3-4
Fuel gauge ......................................3-4
Coolant temperature gauge ............3-5
Multi-function display ......................3-5
Handlebar switches ........................3-8
Front brake lever ............................3-9
Rear brake lever .............................3-9
Fuel tank cap ................................3-10
Fuel ...............................................3-10
Catalytic converter ........................3-11
Seat ..............................................3-11
Storage compartment ...................3-12
Storage compartment ...................3-13
Adjusting the shock absorber
assemblies ................................3-13
Luggage hook ...............................3-14
Sidestand ......................................3-14
Ignition circuit cut-off system ........3-15PRE-OPERATION CHECKS............. 4-1
Pre-operation check list .................. 4-2
OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting the engine ......................... 5-1
Starting off ...................................... 5-2
Acceleration and deceleration ........ 5-2
Braking ........................................... 5-3
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-4
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
MINOR REPAIR................................. 6-1
Owner’s tool kit ............................... 6-1
Periodic maintenance and
lubrication chart .......................... 6-2
Removing and installing cowlings
and panels .................................. 6-5
Checking the spark plug ................. 6-6
Engine oil ....................................... 6-7
Final transmission oil .................... 6-10
Coolant ......................................... 6-11
Air filter and V-belt case air filter
elements ................................... 6-12
Checking the throttle cable free
play ........................................... 6-13
Valve clearance ............................ 6-14
Tires ............................................. 6-14Cast wheels ................................. 6-16
Front and rear brake lever free
play ........................................... 6-16
Checking the front and rear brake
pads .......................................... 6-17
Checking the brake fluid level ...... 6-17
Changing the brake fluid .............. 6-18
Checking and lubricating the
cables ....................................... 6-19
Checking and lubricating the
throttle grip and cable ............... 6-19
Lubricating the front and rear
brake levers .............................. 6-19
Checking and lubricating the
centerstand and sidestand ....... 6-20
Checking the front fork ................. 6-20
Checking the steering .................. 6-21
Checking the wheel bearings ....... 6-22
Battery ......................................... 6-22
Replacing the fuses ..................... 6-23
Replacing a headlight bulb .......... 6-24
Replacing a front turn signal light
bulb ........................................... 6-26
Replacing a tail/brake light bulb or
a rear turn signal light bulb ....... 6-27
Replacing the license plate light
bulb ........................................... 6-28
Replacing an auxiliary light
bulb ........................................... 6-28
Troubleshooting ........................... 6-28
Troubleshooting charts ................ 6-29U16PE0E0.book Page 1 Tuesday, May 8, 2007 10:26 AM

SAFETY INFORMATION
1-3
1When loading within this weight limit,
keep the following in mind:


Cargo and accessory weight
should be kept as low and close to
the scooter as possible. Make sure
to distribute the weight as evenly
as possible on both sides of the
scooter to minimize imbalance or
instability.


Shifting weights can create a sud-
den imbalance. Make sure that ac-
cessories and cargo are securely
attached to the scooter before
riding. Check accessory mounts
and cargo restraints frequently.


Never attach any large or heavy
items to the handlebar, front fork,
or front fender. Such items can
create unstable handling or a slow
steering response.
Accessories
Genuine Yamaha accessories have
been specifically designed for use on
this scooter. Since Yamaha cannot test
all other accessories that may be avail-
able, you must personally be responsi-
ble for the proper selection, installationand use of non-Yamaha accessories.
Use extreme caution when selecting
and installing any accessories.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.


Never install accessories or carry
cargo that would impair the perfor-
mance of your scooter. Carefully
inspect the accessory before using
it to make sure that it does not in
any way reduce ground clearance
or cornering clearance, limit sus-
pension travel, steering travel or
control operation, or obscure lights
or reflectors.
Accessories fitted to the handle-
bar or the front fork area can
create instability due to improper
weight distribution or aerody-
namic changes. If accessories
are added to the handlebar or
front fork area, they must be as
lightweight as possible and
should be kept to a minimum.
Bulky or large accessories may
seriously affect the stability of
the scooter due to aerodynamic
effects. Wind may attempt to liftthe scooter, or the scooter may
become unstable in cross
winds. These accessories may
also cause instability when
passing or being passed by
large vehicles.
Certain accessories can dis-
place the operator from his or
her normal riding position. This
improper position limits the free-
dom of movement of the opera-
tor and may limit control ability,
therefore, such accessories are
not recommended.


Use caution when adding electri-
cal accessories. If electrical acces-
sories exceed the capacity of the
scooter’s electrical system an
electric failure could result, which
could cause a dangerous loss of
lights or engine power.
Gasoline and exhaust gas


GASOLINE IS HIGHLY FLAMMA-
BLE:
Always turn the engine off when
refueling.
U16PE0E0.book Page 3 Tuesday, May 8, 2007 10:26 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-3
32. Push the key in from the “OFF” po-
sition, and then turn it to “LOCK”
while still pushing it.
3. Remove the key.
To unlock the steering
Push the key in, and then turn it to
“OFF” while still pushing it.
WARNING
EWA10060
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems will
be switched off, which may result in
loss of control or an accident. Make
sure that the vehicle is stopped be-
fore turning the key to “OFF” or“LOCK”.
EAU11003
Indicator and warning lights
EAU11030
Turn signal indicator lights “” and
“”
The corresponding indicator light flash-
es when the turn signal switch is
pushed to the left or right.
EAU11080
High beam indicator light “”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU11480
Engine trouble warning light “”
This warning light comes on when an
electrical circuit monitoring the engine
is defective. When this occurs, have a
Yamaha dealer check the self-diagno-
sis system.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. If the warning light does not come
on for a few seconds, then go off, have
a Yamaha dealer check the electrical
circuit.
EAU38620
Immobilizer system indicator light
The electrical circuit of the indicator
light can be checked by turning the key
to “ON”.
If the indicator light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.
When the key is turned to “OFF” and 30
seconds have passed, the indicator
light will start flashing indicating the im-
mobilizer system is enabled. After 24
hours have passed, the indicator light
will stop flashing, however the immobi-
lizer system is still enabled.
1. High beam indicator light “”
2. Left turn signal indicator light “”
3. Immobilizer system indicator light
4. Right turn signal indicator light “”
5. Engine trouble warning light “”
12 3 4 5
ZAUM0697
U16PE0E0.book Page 3 Tuesday, May 8, 2007 10:26 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-15
3(or does not stay up), otherwise the
sidestand could contact the ground
and distract the operator, resulting
in a possible loss of control.
Yamaha’s ignition circuit cut-off
system has been designed to assist
the operator in fulfilling the respon-
sibility of raising the sidestand be-
fore starting off. Therefore, check
this system regularly as described
below and have a Yamaha dealer re-
pair it if it does not function proper-
ly.
EAU15372
Ignition circuit cut-off system The ignition circuit cut-off system (com-
prising the sidestand switch and brake
light switches) has the following func-
tions.

It prevents starting when the side-
stand is up, but neither brake is ap-
plied.


It prevents starting when either
brake is applied, but the sidestand
is still down.


It cuts the running engine when the
sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure.WARNING
EWA10250
If a malfunction is noted, have a
Yamaha dealer check the system be-fore riding.
U16PE0E0.book Page 15 Tuesday, May 8, 2007 10:26 AM

OPERATION AND IMPORTANT RIDING POINTS
5-1
5
EAU15980
WARNING
EWA10870


Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer re-
garding any control or function
that you do not thoroughly un-
derstand.


Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.


For safety, always start the en-gine with the centerstand down.
EAUM2230
Starting the engine CAUTION:
ECA10250
See page 5-4 for engine break-in in-
structions prior to operating the ve-hicle for the first time.
In order for the ignition circuit cut-off
system to enable starting, the side-
stand must be up.
WARNING
EWA10290


Before starting the engine,
check the function of the igni-
tion circuit cut-off system ac-
cording to the procedure
described on page 3-15.


Never ride with the sidestanddown.
1. Turn the key to “ON”.
CAUTION:
ECAM1080
The following warning lights and in-
dicator light should come on for a
few seconds, then go off.

Fuel level warning light


Engine trouble warning light


Immobilizer system indicator
light
If a warning or indicator light does
not go off, see page 3-3 for the corre-
sponding warning and indicator
light circuit check.
2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the front
or rear brake.NOTE:If the engine does not start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to pre-1. Rear brake lever
2. Start switch
3. Front brake lever
123
ZAUM0649
U16PE0E0.book Page 1 Tuesday, May 8, 2007 10:26 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
10*TiresCheck tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.√√√√ √
11*Wheel bearingsCheck bearing for looseness or damage.√√√√
12*Steering bearingsCheck bearing play and steering for roughness.√√√√√
Lubricate with lithium-soap-based grease. Every 24000 km
13*Chassis fastenersMake sure that all nuts, bolts and screws are properly
tightened.√√√√ √
14 Sidestand, centerstandCheck operation.
Lubricate.√√√√ √
15*Sidestand switchCheck operation.√√√√√ √
16*Front forkCheck operation and for oil leakage.√√√√
17*Shock absorber assem-
bliesCheck operation and shock absorbers for oil leakage.√√√√
18*Fuel injectionCheck engine idle speed.√√√√√ √
19 Engine oilChange. (See page 3-3.)√When the oil change indicator light comes
on (5000 km after the initial 1000 km and
every 6000 km thereafter)
Check oil level and vehicle for oil leakage. Every 3000 km√
20 Engine oil filter elementReplace.√√√
21*Cooling systemCheck coolant level and vehicle for coolant leakage.√√√√ √
Change. Every 3 years
22 Final transmission oilCheck vehicle for oil leakage.√√ √
Change.√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1000 km)
ANNUAL
CHECK
1 6 12 18 24
U16PE0E0.book Page 3 Tuesday, May 8, 2007 10:26 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
6To install the cowling
1. Connect the headlight coupler and
the turn signal couplers.
2. Place the cowling in the original
position, and then install the
screws.
EAU19481
Panel A
To remove the panel1. Open the seat. (See page 3-11.)
2. Remove the screws, and then pull
the panel off as shown.
To install the panelPlace the panel in the original position,
and then install the screws.
EAU19210
Panel B
To remove the panelRemove the screws, and then take the
panel off.
To install the panelPlace the panel in the original position,
and then install the screws.
EAU19621
Checking the spark plug The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode, it
should be removed and checked in ac-
cordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of the spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally). If
the spark plug shows a distinctly differ-
ent color, the engine could be operating
improperly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
1. Screw
2. Panel AZAUM0656
1
2
1. ScrewZAUM0657
1
Specified spark plug:
NGK/CPR9EA-9
U16PE0E0.book Page 6 Tuesday, May 8, 2007 10:26 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6 Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
NOTE:If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-fied torque as soon as possible.
EAUM2270
Engine oil The engine oil level should be checked
before each ride. In addition, the oil
must be changed at the intervals spec-
ified in the periodic maintenance and
lubrication chart and when the service
indicator light comes on.
To check the engine oil level
1. Place the scooter on the center-
stand.NOTE:Make sure that the scooter is posi-
tioned straight up when checking the oil
level. A slight tilt to the side can result ina false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, remove the oil filler cap, wipe
the dipstick clean, insert it back
into the oil filler hole (without
screwing it in), and then remove it
again to check the oil level.
1. Spark plug gapSpark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
1
ZAUM0037
U16PE0E0.book Page 7 Tuesday, May 8, 2007 10:26 AM